CN105985806B - A kind of method for improving pertroleum wax odor and outward appearance - Google Patents
A kind of method for improving pertroleum wax odor and outward appearance Download PDFInfo
- Publication number
- CN105985806B CN105985806B CN201510060990.2A CN201510060990A CN105985806B CN 105985806 B CN105985806 B CN 105985806B CN 201510060990 A CN201510060990 A CN 201510060990A CN 105985806 B CN105985806 B CN 105985806B
- Authority
- CN
- China
- Prior art keywords
- wax
- filtered
- clay
- scale
- inert gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Fats And Perfumes (AREA)
Abstract
The invention discloses a kind of method for improving pertroleum wax odor and outward appearance, this method includes contacting the scale wax after solvent dewaxing unit recycling design with carclazyte, and mixture is separated, clay-filtered wax is obtained, 300mg/kg is not higher than by toluene solvant content in the scale wax of solvent dewaxing recycling design；And clay-filtered wax is subjected to inert gas air lift in stripping tower, removing influences the material of pertroleum wax odor and outward appearance, is met the wax product of pertroleum wax standard requirement.There is no bulge phenomenon after the clay-filtered and pertroleum wax of inert gas air lift places a period of time.
Description
Technical field
The present invention relates to a kind of method for improving pertroleum wax odor and outward appearance.
Background technology
Pertroleum wax includes atoleine, paraffin and microwax.Atoleine is using petroleum light hydrocarbon as raw material, typically using molecule
Sieve dewaxing is made, and paraffin and microwax are usually that waxy feeds are carried out to dewaxing de-oiling in solvent dewaxing unit to obtain de-oiling
Wax, scale wax is then sent to Clay Refining Unit again and/or hydro-refining unit is refined, finally obtain pertroleum wax production
Product.
Solvent dewaxing is the important process of conventional lubrication oil base oil production process, and it is to mix feedstock oil and dewaxing solvent
It is molten, then progressively cool down, using solvent is insoluble to wax component at low temperature or oligodynamical and to the characteristic of oil dissolving, wax is existed
Crystallize and separate out in solution, then filtered, obtain solvent-laden dewaxed oil and solvent-laden slack wax, the process is referred to as de-
Wax.The slack wax that dewaxing obtains is diluted pulp with solvent, heating is separated by filtration again, removes oil and sweat oil therein
Component, solvent-laden scale wax is obtained, the process is referred to as de-oiling.According to raw material wax content, wax component weight and to pertroleum wax
The difference of product quality requirement, degreasing process generally require progress one to three times.Current most solvent dewaxing units are made
Solvent is butanone, toluene Mixed Solvent.The scale wax containing solvent is carried out into scale wax solvent recovering system after de-oiling
Solvent recovery.Scale wax solvent recovery is typically using vapor stripping of two-effect evaporation or vapor vapour of triple effect evaporation
Carry, finally obtain the scale wax of desolvation, be sent to storage tank as wax Clay Refining Unit or the raw material of hydro-refining unit.
Scale wax further carries out clay-filtered or hydrofinishing and obtains petroleum paraffin product.Clay-filtered pertroleum wax is to utilize
Carclazyte is porous, specific surface area is big, easily adsorbs the characteristics of polar substances, carclazyte is mixed with pertroleum wax, adsorbs lacking in scale wax
Aromatic hydrocarbons, colloid, solvent and mechanical admixture etc. are measured, is removed by filtering, so as to improve the color of paraffin, light stability and smell
Taste etc..Turpentole wax after clay-filtered, sold after shaping as petroleum paraffin product.Fully refined paraffin wax and food-grade stone
Wax standard is except there is the index requests such as fusing point, oil content, color, light stability, needle penetration, water soluble acid or alkali and mechanical admixture
Outside, strict demand is it is also proposed to odor.Although without odor requirement, client and user are also reluctant other pertroleum wax standards
Meaning receives and using the petroleum paraffin product for having larger peculiar smell.
Because solvent dewaxing unit is usually using butanone, the mixed solvent of toluene, after solvent dewaxing unit recycling design
A few to tens of mg/kg can be contained in scale wax, sometimes even hundreds of mg/kg solvent.These for taking Clay Refining Unit to are molten
Agent, it is difficult to be removed totally in Clay Refining Unit, cause pertroleum wax finished product to contain trace solvent, influence the odor of pertroleum wax.
In addition, the material for influenceing paraffin odor is extremely complex, the butanone used during solvent dewaxing, toluene solvant are removed to sometimes
Very low level, the odor of paraffin still can not meet requirement of the standard to odor.The GB/T that particularly in December, 2010 implements
446-2010 fully refined paraffin wax national standard replaces GB 446-1993, and fully refined paraffin wax odor improves from original no more than 2 grades
To no more than 1 grade, the requirement to fully refined paraffin wax odor is stricter.In addition, in food-grade paraffin wax standard GB 7189-2010
The requirement to odor of packaging for foodstuff paraffin and food grade microcrystal paraffin standard GB 22160-2008 be also all no more than 1 grade.Cause
This, will reach requirement of the pertroleum wax standard to odor, it is also necessary to improve the production technology of existing pertroleum wax.
The clay-filtered general extraction temperature for using 110 DEG C -160 DEG C of pertroleum wax.From solvent dewaxing unit or storage tank
Scale wax, petroleum paraffin product still can contain a certain amount of toluene solvant, other things influential on odor after clay-filtered
Matter and moisture, so as to not only influence the odor of wax product, and the problems such as wax product color change and stencil plate bulge can be caused,
Therefore, it is necessary to existing pertroleum wax production technology is further improved.
The content of the invention
The purpose of the present invention is that the petroleum paraffin product for overcoming the pertroleum wax process for refining using prior art to obtain still can
The defects of causing product quality bad containing the material for having an impact product odor and outward appearance, and stone can effectively be removed by providing one kind
Trace solvent, moisture and other materials for influenceing odor and outward appearance in oily wax product, smell so as to be effectively improved petroleum paraffin product
The method of taste, color and outward appearance, production meet the pertroleum wax of standard requirement.
It was found by the inventors of the present invention that contain in the petroleum paraffin product obtained using the method for existing clay-filtered scale wax
Some toluene solvants and other materials for influenceing odor can not only cause that the odor of pertroleum wax is unqualified, color change, in product
The moisture contained can also cause the problem of stencil plate bulge, and therefore, the present inventor by scale wax by first carrying out carclazyte essence
The method for carrying out inert gas air lift again is made, can effectively remove influences odor, color and the thing for producing stencil plate bulge in pertroleum wax
Matter, so as to greatly improve the quality of petroleum paraffin product.
To achieve these goals, the present invention provides a kind of method for improving pertroleum wax odor and outward appearance, wherein, this method
Including：
(1) scale wax after solvent dewaxing unit recycling design is contacted with carclazyte, and mixture is separated, obtain carclazyte
Refined wax, 300mg/kg is not higher than by toluene solvant content in the scale wax of solvent dewaxing recycling design；
(2) clay-filtered wax is subjected to inert gas air lift in stripping tower.
Method provided by the present invention clay-filtered uses inert gas air lift again using scale wax as raw material, using first passing through
Method removing pertroleum wax in trace solvent, moisture and other materials for influenceing paraffin odor and outward appearance, produce and meet stone
The high quality pertroleum wax of oily wax standard requirement.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is a kind of process schematic for improving pertroleum wax odor and outward appearance of embodiment of the present invention.
Description of reference numerals
The scale wax pipeline of 1 scale wax, 2 scale wax storage tank 3 first
The scale wax pipeline of 4 First Heat Exchanger, 5 product pipeline 6 second
7 petroleum paraffin product, the 8 clay-filtered carclazyte pipeline of blending tank 9
10 blending tank pipeline, 11 by-pass filtration machine, 12 first clay-filtered ceratuba line
13 secondary filtration machine, 14 second clay-filtered ceratuba line
The 3rd clay-filtered ceratuba line of 15 second heat exchanger, 16 steam 17
The stripping tower overhead line of 18 inert gas stripping tower, 19 inert gas 20.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
According to the present invention, the pertroleum wax odor and the method for outward appearance of improving includes：
(1) scale wax after solvent dewaxing unit recycling design is contacted with carclazyte, and mixture is separated, obtained
Clay-filtered wax, 300mg/kg is not higher than by the content of toluene solvant in the scale wax of solvent dewaxing recycling design；
(2) clay-filtered wax is subjected to inert gas air lift in stripping tower.
The scale wax refers to the low oil-containing that the oil product containing high condensation point component obtains through solvent dewaxing unit dewaxing de-oiling
The wax of amount.The oil product of these high condensation point components includes the second line of distillation of vacuum distillation apparatus production, the line that subtracts three, the line that subtracts four, the line that subtracts five
The frivolous oil obtained with decompression residuum through solvent deasphalting, second line of distillation, the line that subtracts three, the line that subtracts four, subtract five line and frivolous oily furfural
Refined oil, and second line of distillation, the line that subtracts three, the line that subtracts four, the line that subtracts five and frivolous oil or its solvent-refined oil are hydrogenated handles what is obtained
Waxy oil.
Typically, slack wax obtain after solvent (butanone, toluene Mixed Solvent) de-oiling is that low oil content contains solvent
Wax, afterwards can to scale wax carry out solvent recovery, to remove solvent therein, therefore, the present invention in, what the scale wax referred to
It is the scale wax by solvent recovery, generally, toluene level therein is not higher than 300mg/kg.
It is described it is clay-filtered refer to carclazyte being added in scale wax, after mixing using carclazyte is porous, specific surface area is big, easily
A small amount of aromatic hydrocarbons, colloid, solvent and mechanical admixture in the Characteristic Adsorption scale wax of polar substances etc. is adsorbed, and mixture is divided
From clay-filtered wax being obtained, to improve the color of paraffin, light stability and odor etc..
According to the present invention, in the step (1), although by the scale wax after solvent dewaxing unit recycling design and in vain
The clay-filtered condition selectable range of soil contact progress is wider, however, it is preferred in the case of, the condition of the contact includes temperature
Degree, the temperature are 110 DEG C -170 DEG C, more preferably 120 DEG C -160 DEG C.The condition of the contact also includes the use of carclazyte
Amount, the dosage of the carclazyte are the 0.2%-8%, more preferably 0.5%-7% of scale wax mass fraction.
In order to meet the requirement of scale wax and carclazyte Contact Temperature, various heating means well known in the art can be used,
For example, steam heats.
It is described to separate mixture according to the present invention, obtain the method for clay-filtered wax by those skilled in the art public affairs
Know, the method for generally use filtering separates carclazyte and clay-filtered wax, and the mixture of scale wax and carclazyte generally is passed through into two
Level filtering, first pass through by-pass filtration and separate the bulky grain carclazyte after absorption and impurity, then it is by secondary filtration that little particle is white
Soil and impurity separation, the double-filtration equipment is known to those skilled in the art, e.g., can use flame filter press, with
Filter cloth and filter paper are separating medium.
According to the present invention, in the step (2), the condition that clay-filtered wax is carried out to inert gas air lift generally includes to press
Power and temperature, temperature are 150 DEG C -240 DEG C, tower top pressure be 10KPa to -60KPa, under preferable case, temperature is is more than or waited
In 170 DEG C to being less than 200 DEG C, tower top pressure is 5KPa to -40KPa.
In order to meet the stripping temperature requirement of clay-filtered wax, it is necessary to be sent into after clay-filtered wax is heated in stripping tower,
The method of the heating can use various heating means well known in the art, for example, steam heats.For example, the heating white
The pressure of steam used in the refined wax of soil can be 1MPa-3MPa, and temperature can be 190 DEG C -260 DEG C.
It is it was found by the inventors of the present invention that a small amount of due to not only containing in scale wax of the solvent dewaxing unit Jing Guo solvent recovery
Toluene solvant, also containing a small amount of moisture, and be also the reason for stencil plate after using prior art clay-filtered easy bubbling
Because caused by contained humidity is not removed in scale wax, and in the method for the invention, first removed using clay-filtered method
After part toluene solvant therein and other materials for influenceing petroleum paraffin product odor, then by inert gas air lift, favorably
The removing of moisture in scale wax, and will further the devolatilization of petroleum paraffin product odor and outward appearance be influenceed, and obtain height
The petroleum paraffin product of quality.In addition, present inventor has further discovered that, in inert gas stripping step, using relatively low
Temperature, such as 170 DEG C, to being less than 200 DEG C, are more conducive to reach more preferably removal effect.
According to the present invention, the condition of inert gas air lift described in step (2) can also include air lift inert gas
Dosage, generally, as long as the air lift meets to make air lift carry out in an inert atmosphere with the dosage of inert gas, it is preferable that gas
The dosage of drawings inert gas is the 1%-8%, more preferably 2%-6% of clay-filtered wax mass fraction.
According to the present invention, the inert gas air lift described in step (2) is carried out generally in stripping tower, the knot of the stripping tower
Structure is known to those skilled in the art.It is for instance possible to use with solvent dewaxing, the stripping tower knot of deoiler Wax recovering system
Structure identical stripping tower, specifically, bubble can be used to emit the stripping tower of tower tray, tower tray number can be 16 layers to 25 layers.
According to the present invention, air lift inert gas can be the conventional various inert atmospheres in this area in step (2), preferably
For nitrogen and/or carbon dioxide, more preferably nitrogen.
According to the present invention, clay-filtered wax is entered from the top of stripping tower, inert gas enters from the bottom of stripping tower,
The material that pertroleum wax odor and outward appearance are influenceed after air lift is discharged from stripping tower overhead line, and obtained petroleum paraffin product is through gas
Stripper bottom of towe pumps out.
According to the present invention, in order that the subsequent process steps of obtained petroleum paraffin product are more convenient, side of the present invention
Method also includes：The petroleum paraffin product obtained after air lift is cooled to 80 DEG C -100 DEG C, oil was moulding is then carried out, produces
To final petroleum paraffin product.The method of the cooling can be using well known to a person skilled in the art various cooling means, example
Such as, usually water cooling.
Under preferable case, the scale wax color and the method for outward appearance of the present invention of improving includes：After scale wax is heated,
It is sent into clay-filtered tank and is mixed with carclazyte, obtained mixture is filtered in filter, isolated carclazyte essence
Wax processed, it is sent into after clay-filtered wax is heated in inert gas stripping tower and carries out air lift, and the stone that will be obtained by stripping tower bottom of towe
Oily wax product cooling.
According to the present invention, wherein, the clay-filtered tank for scale wax to be mixed with carclazyte can use this area
Known various mixing arrangements.Carry out the species and structure and for carclazyte after separation and purification of the stripping tower of inert gas air lift
It is also known to those skilled in the art with the filter of clay-filtered wax, and hereinbefore described, therefore no longer
Repeat.
It is excellent in order to enable the heat in whole subtractive process to reuse to save the energy under preferable case
The mode of heat exchange was gated by the petroleum paraffin product obtained by stripping tower bottom of towe and waits the scale wax being sent into clay-filtered tank
Exchanged heat, with the petroleum paraffin product that can cool down to obtain while scale wax is heated.
According to a kind of embodiment of the present invention, as shown in figure 1, the process solvent recovery from solvent dewaxing unit
Scale wax 1 enter scale wax storage tank 2, scale wax produces through the first scale wax pipeline 3 with the pertroleum wax from the bottom of towe of stripping tower 18
Product 7 exchange heat through product pipeline 5 in First Heat Exchanger 4, are heated to be adapted to clay-filtered temperature by scale wax, while can be
Obtained petroleum paraffin product is cooled down to a certain extent, and the scale wax of heating is then entered into carclazyte essence through the second scale wax pipeline 6
Blending tank 8 processed contacts with the carclazyte from carclazyte pipeline 9, and scale wax and carclazyte mixture pass through from the clay-filtered bottom of blending tank 8
Blending tank pipeline 10 is separated by filtration into clay-filtered by-pass filtration machine 11, removes the clay-filtered wax warp of most of carclazyte
First clay-filtered ceratuba line 12 is further separated by filtration into clay-filtered secondary filtration machine 13.Carclazyte is removed completely
Clay-filtered wax enters in the second heat exchanger 15 heated by steam 16 through the second clay-filtered ceratuba line 14 to be heated, and is heated
Clay-filtered wax afterwards enters the top of inert gas stripping tower 18 through the 3rd clay-filtered ceratuba line 17, and from inert gas gas
The contact of inert gas 19 that the bottom of stripper 18 enters carries out air lift, removes trace solvent, moisture and other influences in scale wax
The material of paraffin odor and outward appearance.The material for influenceing pertroleum wax odor and outward appearance is discharged from stripping tower overhead line 20.Indifferent gas
The petroleum paraffin product 7 of the bottom of towe of body stripping tower 18 enters First Heat Exchanger 4 through product pipeline 5, as Clay Refining Unit charging (i.e.
Scale wax from the first scale wax pipeline 3) heat source.Petroleum paraffin product 7 after heat exchange is water cooled rear into shaping again
Equipment is molded or (not marked in Fig. 1) into petroleum paraffin product storage tank.The clay-filtered wax for improving quality meets pertroleum wax
Standard requirement, can particularly reach requirement of the GB/T 446-2010 fully refined paraffin wax national standards to odor, and outward appearance is smooth,
Bulge is not played after placing a period of time.
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
The present invention will be described in detail by way of examples below.
In following examples and comparative example, atlapulgite used is purchased from Fushun Petrochemical Company, activity degree 225H+mmol/
Kg, percent of decolourization 95%, the mass % of moisture 8.1, the mass % of granularity (by 75pm screen clothes) 92.The filter cloth of first order flame filter press
Mesh number is 400, and the filter cloth mesh number of second level flame filter press is 800；Inert gas stripping tower emits the stripping tower of tower tray, tower for bubble
Disk number is 20 layers.
In embodiment, petroleum paraffin product is analyzed with the following method：Fusing point GB/T2539, oil content GB/T3554, light
Stability SH/T0404, Saybolt color GB/T3555, needle penetration GB/T4985, odor SH/T0414.Mechanical admixture and water contain
Amount uses the visual method in GB/T446, and toluene level is surveyed using Headspace-solid phase microextraction-Gas chromatographyMass spectrometry
.
Embodiment 1
The present embodiment is used for the method for illustrating improvement pertroleum wax odor and outward appearance provided by the invention.
Solvent dewaxing unit carries out dewaxing de-oiling by raw material of second line of distillation solvent-refined oil, and scale wax enters scale wax storage tank
Store (toluene solvant content is 126mg/kg in scale wax).
As shown in figure 1, after the scale wax from scale wax storage tank is dehydrated with the deodorizing from inert gas stripping tower bottom
Petroleum paraffin product is exchanged heat to after 120 DEG C, and scale wax is sent into clay-filtered blending tank and mixed with atlapulgite, and atlapulgite adds
Measure as the 4% of scale wax quality.The first order and second are sequentially entered from the scale wax that carclazyte blending tank comes out and carclazyte mixture
Level flame filter press is filtered, removes carclazyte.From the second level flame filter press outflow clay-filtered wax pass through with by 1.0MPa,
The heat exchanger that 200 DEG C of superheated steams provide thermal source is exchanged heat to after 160 DEG C, and air lift is carried out into inert gas stripping tower.Inertia
Gas stripper pressure on top surface is -40KPa, and inert gas dosage is the 2% of clay-filtered wax amount, and the inert gas is nitrogen
Gas.Deodorizing is obtained from inert gas stripping tower bottom and improves outward appearance pertroleum wax, and it is with treating clay-filtered scale wax heat exchange and cold
But to device is gone out as product after 80 DEG C, its property is shown in Table 1.
Embodiment 2
The present embodiment is used for the method for illustrating improvement pertroleum wax odor and outward appearance provided by the invention.
Solvent dewaxing unit carries out dewaxing de-oiling by raw material of the line solvent-refined oil that subtracts four, and scale wax enters scale wax storage tank
Store (toluene solvant content is 83mg/kg in scale wax).
Scale wax from scale wax storage tank and the petroleum paraffin product after the deodorizing dehydration from inert gas stripping tower bottom
Exchange heat to after 150 DEG C, scale wax is sent into clay-filtered blending tank mixes with atlapulgite, and atlapulgite addition is scale wax
The 7% of quality.The first order and second level plate-frame filtering are sequentially entered from the scale wax that carclazyte blending tank comes out and carclazyte mixture
Machine is filtered, removes carclazyte.Passed through from the clay-filtered wax of second level flame filter press outflow with being overheated by 3.0MPa, 240 DEG C
The heat exchanger that steam provides thermal source is exchanged heat to after 185 DEG C, and air lift is carried out into inert gas stripping tower.Inert gas stripper overhead
Pressure is -20KPa, and inert gas dosage is the 6% of clay-filtered wax amount, and the inert gas is nitrogen.From inert gas
Stripping tower bottom obtains deodorizing and improves outward appearance pertroleum wax, itself and the conduct after clay-filtered scale wax exchanges heat and is cooled to 80 DEG C
Product goes out device, and its property is shown in Table 1.
Embodiment 3
The present embodiment is used for the method for illustrating improvement pertroleum wax odor and outward appearance provided by the invention.
Solvent dewaxing unit carries out dewaxing de-oiling by raw material of the line hydrotreating waxy oil that subtracts four, and scale wax enters scale wax
Storage tank stores (toluene solvant is 56mg/kg in scale wax).
Scale wax from scale wax storage tank and the petroleum paraffin product after the deodorizing dehydration from inert gas stripping tower bottom
Exchange heat to after 145 DEG C, scale wax is sent into clay-filtered blending tank mixes with atlapulgite, and atlapulgite addition is scale wax
The 0.5% of quality.The first order and second level sheet frame mistake are sequentially entered from the scale wax that carclazyte blending tank comes out and carclazyte mixture
Filter is filtered, removes carclazyte.From the second level flame filter press outflow clay-filtered wax pass through with by 3.0MPa, 230 DEG C of mistakes
The heat exchanger that vapours provides thermal source is exchanged heat to after 175 DEG C, and air lift is carried out into inert gas stripping tower.Inert gas stripping tower
Pressure on top surface is -30KPa, and inert gas dosage is the 4% of clay-filtered wax amount, and the inert gas is nitrogen.From indifferent gas
Body stripping tower bottom obtains deodorizing and improves outward appearance pertroleum wax, and it after clay-filtered scale wax exchanges heat and is cooled to 80 DEG C with making
Go out device for product, its property is shown in Table 1.
Embodiment 4
The present embodiment is used for the method for illustrating improvement pertroleum wax odor and outward appearance provided by the invention.
Solvent dewaxing unit carries out dewaxing de-oiling by raw material of frivolous refined hydrotreating waxy oil, and scale wax enters de-oiling
Wax storage tank stores (toluene solvant is 185mg/kg in scale wax).
Scale wax from scale wax storage tank and the petroleum paraffin product after the deodorizing dehydration from inert gas stripping tower bottom
Exchange heat to after 160 DEG C, scale wax is sent into clay-filtered blending tank mixes with atlapulgite, and atlapulgite addition is scale wax
The 1.5% of quality.The first order and second level sheet frame mistake are sequentially entered from the scale wax that carclazyte blending tank comes out and carclazyte mixture
Filter is filtered, removes carclazyte.From the second level flame filter press outflow clay-filtered wax pass through with by 3.0MPa, 250 DEG C of mistakes
The heat exchanger that vapours provides thermal source is exchanged heat to after 195 DEG C, and air lift is carried out into inert gas stripping tower.Inert gas stripping tower
Pressure on top surface is -10KPa, and inert gas dosage is the 3% of clay-filtered wax amount, and the inert gas is nitrogen.From indifferent gas
Body stripping tower bottom obtain deodorizing and improve outward appearance pertroleum wax, its with after clay-filtered scale wax exchanges heat and is cooled to 100 DEG C
Go out device as product, its property is shown in Table 1.
Embodiment 5
The present embodiment is used for the method for illustrating improvement pertroleum wax odor and outward appearance provided by the invention.
According to the method for embodiment 2, unlike, from the clay-filtered wax of second level flame filter press outflow pass through with by
The heat exchanger that 3.0MPa, 250 DEG C of superheated steams provide thermal source is exchanged heat to after 220 DEG C, and air lift is carried out into inert gas stripping tower,
Inert gas stripper overhead pressure is -20KPa, and inert gas dosage is the 6% of clay-filtered wax.Obtained petroleum paraffin product
Property is shown in Table 1.
Comparative example 1
Solvent dewaxing unit carries out dewaxing de-oiling using second line of distillation solvent-refined oil as raw material, and scale wax stores up into scale wax
Tank stores (toluene solvant content is 126mg/kg in scale wax).
Scale wax from scale wax storage tank exchanges heat to after 120 DEG C, is mixed into clay-filtered blending tank with atlapulgite,
Atlapulgite addition is the 4% of scale wax quality.The scale wax come out from carclazyte blending tank sequentially enters with carclazyte mixture
The first order and second level flame filter press are filtered, remove carclazyte.Clay-filtered pertroleum wax is used as production after being cooled to 80 DEG C
Product go out device, and its property is shown in Table 1.
Comparative example 2
Solvent dewaxing unit carries out dewaxing de-oiling, scale wax enters de-oiling using the line hydrotreating waxy oil that subtracts four as raw material
Wax storage tank stores (toluene solvant content is 56mg/kg in scale wax).
Scale wax from scale wax storage tank exchanges heat to after 145 DEG C, is mixed into clay-filtered blending tank with atlapulgite,
Atlapulgite addition is the 0.5% of scale wax quality.The scale wax come out from carclazyte blending tank enters successively with carclazyte mixture
Enter the first order and second level flame filter press is filtered, removes carclazyte.Conduct after clay-filtered pertroleum wax is cooled to 80 DEG C
Product goes out device, and its property is shown in Table 1.
Comparative example 3
It is raw materials used using embodiment 2, and use clay-filtered condition same as Example 2.Except that will be lazy
Property gas stripping step is placed in before clay-filtered step, and inert gas stripping conditions are same as Example 2.Scale wax indifferent gas
Cool after body air lift, then carry out it is clay-filtered, it is clay-filtered after refined wax no longer carry out heating and inert gas air lift, directly
Go out device as product after being cooled to 80 DEG C, its property is shown in Table 1.
Table 1
Can be seen that from above example 1-5 result will be clay-filtered and lazy by the scale wax progress of desolvation
After property gas air lift, the odor of obtained petroleum paraffin product all reaches 0.5 grade, and according to fully refined paraffin wax standard GB/T/T
446-2010 do it is as clear as crystal when mechanical admixture and water, place 10 days after stencil plate it is smooth, there is not bulge phenomenon.From embodiment
5 as can be seen that improve inert gas stripping temperature cause clay-filtered wax color burn, when stripping temperature from embodiment 2 185
After DEG C bringing up to 220 DEG C of embodiment 5, clay-filtered wax color is reduced to+No. 26 from+No. 29.
Be can be seen that from above comparative example 1-2 result in the subtractive process of scale wax, only carry out it is clay-filtered without
The odor of pertroleum wax through inert gas air lift is 2 grades, and it is miscellaneous to make machinery according to fully refined paraffin wax standard GB/T/T 446-2010
Micro- muddiness when matter and water, there is bulge in stencil plate after placing 10 days.In addition, from comparative example 3 as can be seen that refining in scale wax
Cheng Zhong, equally include it is clay-filtered with inert gas air lift the step of, but first carry out inert gas air lift then carry out it is white
The refined method of soil, although odor disclosure satisfy that the quality criteria requirements of national standard, stencil plate go out after placing a period of time
Bubbling phenomenon is showed.In summary, method provided by the invention can improve the odor and outward appearance of pertroleum wax well, and production is full
The high-quality fully refined paraffin wax of sufficient pertroleum wax standard requirement.
Claims (13)
- A kind of 1. method for improving pertroleum wax odor and outward appearance, it is characterised in that this method includes：(1) scale wax after solvent dewaxing unit recycling design is contacted with carclazyte, and mixture is separated, obtained clay-filtered Wax, 300mg/kg is not higher than by toluene solvant content in the scale wax of solvent dewaxing recycling design；(2) clay-filtered wax is subjected to inert gas air lift in stripping tower.
- 2. according to the method for claim 1, wherein, in step (1), the condition of the contact includes：Temperature be 110 DEG C- 170℃。
- 3. according to the method for claim 2, wherein, temperature is 120 DEG C -160 DEG C.
- 4. according to the method described in claim 1,2 or 3, wherein, in step (1), the condition of the contact also includes：Carclazyte Dosage is the 0.2%-8% of scale wax mass fraction.
- 5. according to the method for claim 4, wherein, the dosage of carclazyte is the 0.5%-7% of scale wax mass fraction.
- 6. according to the method for claim 1, wherein, in step (2), the condition of air lift includes：Tower top pressure is 10KPa To -60KPa, temperature is 150 DEG C -240 DEG C.
- 7. according to the method for claim 6, wherein, in step (2), the condition of air lift includes：Tower top pressure be 5KPa to- 40KPa, temperature are to less than 200 DEG C more than or equal to 170 DEG C.
- 8. according to the method described in claim 1,6 or 7, wherein, in step (2), air lift is carclazyte with the dosage of inert gas The 1%-8% of refined wax mass fraction.
- 9. according to the method for claim 8, wherein, the dosage of air lift inert gas is clay-filtered wax mass fraction 2%-6%.
- 10. according to the method for claim 8, wherein, air lift is nitrogen and/or carbon dioxide with inert gas.
- 11. according to the method for claim 1, wherein, this method also includes：The petroleum paraffin product obtained after air lift is cold But to 80 DEG C -100 DEG C.
- 12. according to the method described in any one in claim 1-3,6-7 and 11, wherein, the improvement pertroleum wax odor and The method of outward appearance includes：After scale wax is heated, it is sent into clay-filtered tank and is mixed with carclazyte, obtained mixture is being filtered Filtered in device, isolated clay-filtered wax, be sent into inert gas gas tower and carry out after clay-filtered wax is heated Inert gas air lift, and the petroleum paraffin product obtained by stripping tower bottom of towe is cooled down.
- 13. the method according to claim 11, wherein, the petroleum paraffin product that will be obtained by heat exchange by stripping tower bottom of towe Scale wax with waiting to be sent into clay-filtered tank is exchanged heat, to heat scale wax and cool down obtained petroleum paraffin product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060990.2A CN105985806B (en) | 2015-02-05 | 2015-02-05 | A kind of method for improving pertroleum wax odor and outward appearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510060990.2A CN105985806B (en) | 2015-02-05 | 2015-02-05 | A kind of method for improving pertroleum wax odor and outward appearance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105985806A CN105985806A (en) | 2016-10-05 |
| CN105985806B true CN105985806B (en) | 2018-02-23 |
Family
ID=57037800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510060990.2A Active CN105985806B (en) | 2015-02-05 | 2015-02-05 | A kind of method for improving pertroleum wax odor and outward appearance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105985806B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107267213A (en) * | 2017-08-03 | 2017-10-20 | 广东华粤特种蜡科技有限公司 | A kind of production method of soap low melt wax |
| JP7203092B2 (en) * | 2018-03-28 | 2023-01-12 | 丸善石油化学株式会社 | Method for deodorizing hydrogenated petroleum resin and method for producing hydrogenated petroleum resin |
| CN112625747B (en) * | 2019-09-24 | 2022-09-02 | 内蒙古伊泰煤基新材料研究院有限公司 | Solvent deoiling device and method |
| CN112625746B (en) * | 2019-09-24 | 2022-08-30 | 内蒙古伊泰煤基新材料研究院有限公司 | Device and method for preparing high-quality wax |
| CN112745941B (en) * | 2019-10-31 | 2022-04-12 | 中国石油化工股份有限公司 | Method for producing lubricating oil base oil |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201719853U (en) * | 2010-07-05 | 2011-01-26 | 萧于盛 | Liquid wax dehydrator |
| CN203076064U (en) * | 2012-11-30 | 2013-07-24 | 大连隆星新材料有限公司 | Paraffin molding machine with automatic temperature and humidity control device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102268294A (en) * | 2010-06-02 | 2011-12-07 | 中国科学院过程工程研究所 | Recovery method of butanone-toluene solvent in dewaxing process of lubricating oil |
| CN202865182U (en) * | 2012-09-18 | 2013-04-10 | 中国石油化工股份有限公司 | Equipment for dewaxed-oil clay refining process |
-
2015
- 2015-02-05 CN CN201510060990.2A patent/CN105985806B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201719853U (en) * | 2010-07-05 | 2011-01-26 | 萧于盛 | Liquid wax dehydrator |
| CN203076064U (en) * | 2012-11-30 | 2013-07-24 | 大连隆星新材料有限公司 | Paraffin molding machine with automatic temperature and humidity control device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105985806A (en) | 2016-10-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105985806B (en) | A kind of method for improving pertroleum wax odor and outward appearance | |
| CA3106773C (en) | Purification of recycled and renewable organic material | |
| US11981869B2 (en) | Purification of recycled and renewable organic material | |
| BR112019002357B1 (en) | PROCESS TO PURIFY A RAW MATERIAL | |
| CN105969515A (en) | Leaching refinement technique of rapeseed oil | |
| JP5873690B2 (en) | Method for producing edible oil and fat and method for producing processed oil and fat product | |
| AU2022385092A1 (en) | A process for refining a vegetable oil | |
| CN103509575A (en) | Solvent used for preparation of high-quality coal-based needle coke | |
| CN105524713B (en) | Industrialized method for removing rubber from rubber tree seed oil | |
| CN105950288A (en) | Mixed fatty acid separation and deacidification/deodorization method | |
| US2272488A (en) | Process fok the production of zein | |
| JP6037487B2 (en) | Fat and oil deoxidation | |
| US1849653A (en) | Process of treating petroleum oil | |
| US1960698A (en) | Process for refining mineral oil | |
| US2006186A (en) | Rectifying process | |
| US2038604A (en) | Process for treating lubricating oils | |
| CN106010638A (en) | Preparation method of low-viscosity green rubber plasticizer | |
| CN112625749B (en) | Candle wax and preparation method thereof | |
| CN106010631A (en) | Solvent refining method of rubber plasticizer | |
| US2036166A (en) | Process for treating naphtha | |
| US20140291207A1 (en) | Method for producing a diesel fuel | |
| CN104593052B (en) | The solvent refining equipment of a kind of wax tailings inferior and method | |
| CN116426335A (en) | Deodorization method for rapeseed oil | |
| CN113684060A (en) | Method for producing petroleum wax emulsion raw material by solvent method squeezing dewaxing | |
| CN106520200A (en) | Production method of environmentally-friendly rubber tire extender oil |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |